增加了返回首页的功能。

data_management/app.py

@@ -85,6 +85,7 @@ class DataManagementApp:
         self.preview_panel.pack(side="left", fill="both", expand=True, padx=5)
         
         # 绑定分页事件
+        self.preview_panel.first_page_btn.configure(command=self._on_first_page)
         self.preview_panel.prev_btn.configure(command=self._on_prev_page)
         self.preview_panel.next_btn.configure(command=self._on_next_page)
         
@@ -152,6 +153,12 @@ class DataManagementApp:
         # 更新统计面板
         self.statistics_panel.update_statistics(stats)
     
+    def _on_first_page(self):
+        """首页"""
+        current_page = self.preview_panel.get_current_page()
+        if current_page > 1:
+            self._load_data(page=1)
+    
     def _on_prev_page(self):
         """上一页"""
         current_page = self.preview_panel.get_current_page()

data_management/ui/preview_panel.py

@@ -254,6 +254,17 @@ class PreviewPanel(ctk.CTkFrame):
         page_frame = ctk.CTkFrame(bottom_frame)
         page_frame.pack(side="right", padx=10, pady=10)
         
+        self.first_page_btn = ctk.CTkButton(
+            page_frame,
+            text="首页",
+            command=self._first_page,
+            width=70,
+            height=30,
+            fg_color="#1f538d",
+            hover_color="#14375e"
+        )
+        self.first_page_btn.pack(side="left", padx=5)
+        
         self.prev_btn = ctk.CTkButton(
             page_frame,
             text="上一页",
@@ -352,6 +363,7 @@ class PreviewPanel(ctk.CTkFrame):
         self.page_label.configure(text=f"第 {self.current_page}/{total_pages} 页")
         
         # 更新按钮状态
+        self.first_page_btn.configure(state="normal" if self.current_page > 1 else "disabled")
         self.prev_btn.configure(state="normal" if self.current_page > 1 else "disabled")
         self.next_btn.configure(state="normal" if self.current_page < total_pages else "disabled")
     
@@ -544,6 +556,12 @@ class PreviewPanel(ctk.CTkFrame):
         
         threading.Thread(target=load_large_image, daemon=True).start()
     
+    def _first_page(self):
+        """首页"""
+        if self.current_page > 1:
+            # 需要重新查询数据（在主应用中处理）
+            pass
+    
     def _prev_page(self):
         """上一页"""
         if self.current_page > 1: